Thank you for posting your query.
There are three possibilities to explain the involuntary shaking in your father's case:
1. Dyskinesia- these are involuntary movements
, which are common in patients with PD. They are believed to be due to levodopa or pramipexole/ropinirole
effect (seen at the peak effect or at end of effect of these medicines).
2. Effect of PD worsening- tremors of PD may get worse over time.
3. Epilepsy- in this condition, the person should lose consciousness, if shaking affects all four limbs
In any case, if you record a video of these movements and show them to the neurologist
, it would be helpful.
Dr Sudhir Kumar MD DM (Neurology)
Senior Consultant Neurologist
Apollo Hospitals, Hyderabad